Warfare in the Vault & the Basin Kingdoms
For this article, I am going to focus on a region called the Basin Kingdoms.
Until 20 years before the current campaign, the Basin Kingdoms were part of the Imperium. However, two decades ago, in a global event called the Dwindling, the luminous orb at the center of our Dyson-Shell world dimmed, even in daytime, and legions of chromatic dragons and fiends invaded the region. Although the invading hordes were repelled, the Imperium was left shattered. The Basin Kingdoms comprise one of the larger shards left over from that older empire.
Warfare in Basin Kingdoms bears a strong resemblance to combat in the mid to late Fourteenth Century in Europe, with some notable exceptions dictated by the realities of a world where magic plays a significant role.